JPS62272046A - Energization control device for air conditioner - Google Patents

Abstract

PURPOSE:To save a charge of consumption power by a method wherein a preliminary operation time for a next day is calculated and a starting time for an air conditioner is set on the basis of a difference between a set preliminary operation time for an air conditioner for a specified day and a required time for the air conditioner until a room temperature reaches a target value. CONSTITUTION:A starting time is set to a timer T-t resulting from subtraction of a predetermined set precooling operation time (t) from a scheduled time T. T' is a time when an indoor temperature reaches a target temperature and a thermostat is turned off and a period ranging from a starting time to the time T' is a required time (t') when a room temperature reaches the target value. If T' is shorter than T' a set preliminary time (t) is longer than the required time (t') to produce a useless power charge and in turn if T' is shorter than T, a temperature at the starting time is not sufficiently attained. Therefore, a starting operation control is performed in such a way as a difference between T and T' becomes minimum. In this way, a required time spent until the temperature reaches the target temperature is compared with a preliminary operation time and in case that the required time is too long, a starting time for tomorrow is set at a later time and the most appropriate starting control is performed.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a device for controlling the start of air conditioning in a building such as a building. This invention relates to an improvement in which the V temperature is already maintained at a target value at a predetermined time to ensure comfort inside the urinary tract.

(Prior Art) Conventionally, as a JIII system for this type of air conditioning, as disclosed in Japanese Patent Publication No. 45-23799, signals from temperature sensors installed at several locations inside and outside the building have been used. After receiving and calculating signals from the scanning unit that sequentially scans the area, weather conditions such as wind speed, building volume, building thermal coefficient, etc., A/D conversion is performed to determine the heat capacity of the building, and this heat capacity and the air conditioner are calculated. There is a system that compares the capacity values of the air conditioners and starts preliminary operation of the air conditioner f[ll+k when the sound of rain matches.

(Problems to be Solved by the Invention) However, the above-mentioned operation method has the disadvantage that it requires many devices such as sensors and A/D converters for calculating heat capacity, resulting in high cost.

The present invention has been made in view of the above, and its purpose is to focus on the fact that changes in room temperature respond slowly to changes in outside temperature due to the excellent insulation properties of modern buildings. The time when the room temperature reaches the target value is detected using a room temperature nermostat etc. installed before air conditioning, the next day's startup time is set based on the difference between this and a predetermined time, and the start time is sequentially adjusted. By controlling to minimize
It is an object of the present invention to provide a startup control device that reduces power DJ costs.

(Means for solving the problem) In order to achieve the above object, the solving means of the present invention, as shown in FIG. 1, performs a preliminary operation of the air conditioner <A),
The object is an air conditioner night start ill 13II device that causes the indoor temperature to converge to a target value at a predetermined time.

Then, a room temperature detection means (B) for detecting the room temperature, and receiving an output signal of the room temperature detection means (B), the air conditioning IN
(Measuring means (C>) that measures the time required from the startup time of A> until the room temperature reaches the target value; and the measuring means (C)
and a start setting means (D) which receives the signal and sets the next start time based on the deviation between the required time and a preset preliminary operation time.

(Function) With the above configuration, in the present invention, on the day when the air conditioner ■1 (△) is operated, the preliminary operation of the air conditioner (A> is started at the set startup time, and the indoor temperature reaches the target value. When this temperature is reached, the room temperature detection means (B) of the air conditioner (A) issues an off signal.

At that time, the activation setting means (D,) is configured to control the room temperature detection means (D).
Compare the time required to reach the target temperature [11] counted by the measuring means (C) until receiving the off signal of B) with the set preliminary operation time, and if the above required time is too long, The next day's startup time is set early, and if the required time is too short, the next day's startup time is set late, and the deviation is gradually reduced to perform optimal startup control.

(Example) Hereinafter, an example of the present invention will be described based on the drawings from FIG. 2 onwards.

Figure 2 shows the refrigerant piping system of a multi-type air conditioner, where (X) is an outdoor unit, and (Y), <Y') are the first and second indoor units each placed in a predetermined room. Inside the outdoor unit (X), there is a compression In (1) and a four-way switching valve (2) that switches to VJ as shown by the solid line in the figure during cooling operation and switches to VJ as shown by the broken line in the figure during heating operation.
and an outdoor heat exchanger (3) having an outdoor blower fan (3a).
) and a cooling expansion valve (
4), a heating capillary tube (5) connected in parallel to the cooling expansion tube (4), which is opened during heating operation to allow the refrigerant to flow through the heating capillary tube (5). The solenoid valve (6) and the accumulator (7) are the main
g: Firearms (1)-(
A) are connected to each other by refrigerant piping <8) so that refrigerant can flow therethrough.

On the other hand, the two indoor units (Y) and (Y'') have the same configuration, and inside them, as shown in Figure 3, two heat exchangers (10a>, (10b)) are installed in parallel with each other. A palace heat exchanger (10) that is connected and has one indoor ventilation fan (10C), and a kitopira redup (11) for auxiliary heating.
) and applicable? +li A heating solenoid valve (12) that is connected in parallel to the D-no-J-warm capillary tube (11) and allows or blocks the flow of refrigerant to the auxiliary heating capillary tube (11) during heating operation; A cooling@magnetic valve (13) connected in parallel to the auxiliary heating double pipe (11) and opened during cooling operation is built-in, and each of the devices (10) to (13) is connected to a refrigerant pipe (15). ) are connected so that refrigerant can flow. The two palm units l-(Y) and (Y') are connected to the refrigerant pipes (16) and
... are connected in parallel to the above outdoor unit [... (X), and during cooling operation, the compressor (
The refrigerant from 1) is circulated in each indoor unit (Y) as shown by the solid arrow in the figure by switching the four-way switching valve (2).

The amount of heat absorbed from the indoor air by the indoor heat exchanger (10) at (Y') is repeatedly radiated to the outside air by the outdoor unit (outdoor heat exchanger (3) at X>), thereby simultaneously cooling two rooms. During heating operation, by avoiding circulation of the refrigerant from the compressor (1) as shown by the broken line arrow in the figure, the refrigerant cycle is reversed to the above cycle, and two air spaces are heated at the same time. .

Further, in the outdoor unit (X), (19) is a three-way solenoid valve that selectively switches the inside of the compressor (1) for communication between its discharge side and suction side, and the figure of the three-way solenoid valve (19) When switching to the discharge side shown by the solid line, a part of the refrigerant discharged from the compressor 1m (1) is immediately unloaded into the compressor (1) and the capacity is controlled, while the suction side 1i7J shown by the broken line is switched. When replacing the compressor (
1) Full capacity operation is performed.

And <35> is the indoor unit (Y).

(Y') is a thermostat that detects the room temperature and is turned off when the room temperature reaches the target temperature; (40) is a control that controls the operation of the air conditioner; It is a unit.

Next, a method of controlling the startup when performing preliminary operation of the air conditioner so that the room temperature reaches the target directly at the scheduled time will be described. FIG. 3 is a graph showing changes in indoor temperature during preliminary operation for each air conditioner, taking air conditioning as an example. In FIG. 3, the lower part is the predetermined schedule time, which corresponds to the morning work start time. The startup time is the pre-cooling operation time set in advance [the above schedule time Tf].
It is set to the time (Tt) obtained by subtracting 3 seconds.
'(T') is the time when the indoor temperature reaches the target temperature and the thermostat is turned off, and the time from the startup time to the above (T')
') is the time required for the room temperature to reach the target value (t'
). The above (T') is faster than the above (T) [If no, the set preliminary operation time (1) is asked when required, t'), resulting in wasted electricity costs, and the above (T') becomes (T> If it is later, a problem arises in that the temperature at the time of starting does not reach a sufficiently appropriate level, so it is necessary to perform optimal startup control so that the deviation between (T) and T') is minimized.

Figure 4 is based on the above time schedule (T
) and T') is a flowchart showing a start control operation for preliminary operation of the air conditioner by the control unit (40). In Figure 4,
First, in step S+, it is determined whether the start-up ILll(T-[) set based on the previous day's result has been reached.
When the time is reached, the air conditioner is started in step S2.

When the precooling operation is sufficient and the temperature in the room reaches the target temperature, and the thermoset (35) is turned off, the thermostat off time (T') is measured in step S1, and the process moves to step S4. In step SJ, the difference (T-T') between the pre-stored schedule time (Go) and thermoset Δoff time (T') divided by the pre-cooling operation time (T-T')/j is calculated. It is determined whether the value is larger than the allowable error of 0.05, and if YES, in step S5, n-α tn-1+(1-α)
The next day's pre-cooling operation time is corrected by #(tn-+-(T-T')). Here, tn
-l is the precooling operation time for the current day, tn is the precooling operation time for the next day, and α is a value exceeding O (zero) and smaller than 1 (for example, 0.6
), the next day's precooling operation time tn is largely corrected based on the day's precooling operation time [n-1], and the next day's precooling operation time tn is adjusted smoothly to within the allowable error without hunting. Freezer preliminary operation start time (T-t
) is set (as tn having a value smaller than tn-1 on the current day is adopted, and the next day's startup time is shifted and set later than that of the current day.Next, in the case of No in step S4, the process proceeds to step Ss. Shift, determine whether (T'-T), /l is a value smaller than the tolerance 0.05, and YE
In the case of S, in step 87, the next day's precooling operation time ℃ is corrected to the larger one by tn = a -1-1+ (1-α) (tn-, ±(T'-T)), and the next day's precooling operation time is Set the start time (Tt) of the start time (Tt) earlier. Moreover, in the case of No in step S6, <T−
Since the absolute value of T' )/l is within 0.05, which is within the allowable error, the precooling operation time of the current day is adopted as the precooling operation time of the next day, and the startup time of the next day is set to the same time as that day. to complete the startup i+ll II+.

Therefore, in the above flow, in this embodiment, step S3 constitutes a measuring means (C) that measures the time required from the startup time until the room temperature reaches the target value. Steps 84 to S7 constitute a startup setting means (D) that sets the next startup time based on the deviation between the required time ((') and the set preliminary operation time (1).

In the above manner, for example, once the schedule time (T)
Even if there is a day when the deviation of the thermostuff 1-off time (T') is large, it will be corrected the next day. Also, the allowable error is 0.0
5 is 3 minutes if the precooling operation time is 1 hour, and a deviation of 1 good can be easily tolerated. In particular, modern buildings have good insulation, and the room temperature does not change much in response to changes in the outside air temperature, so slight daily changes in room temperature do not cause instability in control.In other words, seasonal fluctuations do not Even if there is, there are few daily fluctuations, and 1! ? Optimal startup control can be performed with an easy-to-use device.

In addition, in the above embodiment, explanation was given regarding the cooling operation.
The same applies to heating operation.

In addition, the indoor units (Y) and (Y') may have different startup times based on the indoor temperature difference, and in that case, the outdoor unit will start operating in conjunction with the earlier startup time. It is set. The above control unit 40) has ? Measurement means (B
) and activation setting means (D), and although the above embodiment has been described for the case where there are two indoor units, optimal activation control can be similarly performed even when there are a large number of indoor units.

(Effects of the Invention) As explained above, according to the present invention, the next day's Since the preliminary operation time is blocked and the start time of the air conditioner is set, there is no need to separately install a △/D converter or various heat sensors by using an indoor thermoset that can be attached to the indoor unit of the air conditioner. , it is possible to perform @appropriate start-up control during preliminary operation of the air conditioner at low cost, and reduce power consumption costs.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention. Figures 2 to 4 show examples of the present invention, with Figure 2 being a schematic diagram of its overall configuration, Figure 3 being a graph showing changes in room temperature during operation of the air conditioner, and Figure 4 (see Figure 4). It is a flowchart diagram showing the operation of the control unit. (35)...Thermostat, <40)...Control circuit, (A)...Air conditioner, (B)...Room temperature detection Means, (C)...HL side means, (D>...Start setting means, (X)...Outdoor unit, (Y), (Y')
...Units Patent Applicant Agent: Daikin Industries, Ltd. 1)
Hiroshi 51.・Biha 3rd illustration Gravity Poetry Button 1

Claims (1)

[Claims] (1) An air conditioner startup control device that performs preliminary operation of the air conditioner (A) to converge the indoor temperature to a target value at a predetermined time, the device comprising room temperature detection means ( B), and a measuring means (C) that receives the output signal of the room temperature detection means (B) and measures the time required from the startup time of the air conditioner (A) until the room temperature reaches the target value;
The apparatus is characterized by comprising a start setting means (D) for receiving a signal from the measuring means (C) and setting the next start time based on the deviation between the required time and a preset preliminary operation time. Start-up control device for air conditioners.